Why does heat cause matter to expand?
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What is fluorescence?
Explain the Machines ?
WHICH OF THE FOLLOWING PAIR IS INCORRECT? A) ROENTGEN: X-RAY B) NEWTON: LAW OF GRAVITATION C) FARADAY: DIFFUSION OF GASES D) PASTEUR: BACTERIOLOGY
Physics short answer to two significant figures, what is the index of refraction of air?
Why is diamond cut to make if brilliant ?
Why is it easier to swim in sea water than in the river water?
Define Umbra?
How many images will be formed if the angle between two mirrors is 90o ?
What seven colors appear to be white when mixed together?
what is meant patch cards..
Explain the Vapour pressure ?
Is exothermic reaction useful in Lasing process? give reasion of ur answere?